CN109405925A - Magnetic double level gauge with the reflexive feedback system of pressure - Google Patents
Magnetic double level gauge with the reflexive feedback system of pressure Download PDFInfo
- Publication number
- CN109405925A CN109405925A CN201811394587.3A CN201811394587A CN109405925A CN 109405925 A CN109405925 A CN 109405925A CN 201811394587 A CN201811394587 A CN 201811394587A CN 109405925 A CN109405925 A CN 109405925A
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- Prior art keywords
- liquid
- magnetic
- pressure
- level switch
- feedback system
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- 239000007788 liquid Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007667 floating Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000004886 process control Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
Abstract
The invention discloses a kind of magnetic double level gauges with the reflexive feedback system of pressure, including liquidometer ontology, magnetic float, scale, cathode display, water inlet pipe, outlet pipe, upper liquid-level switch, lower liquid-level switch, blowdown flange and pressure sensor, the upper liquid-level switch and lower liquid-level switch are arranged on liquidometer ontology and are located at the top of water inlet pipe and the lower part of outlet pipe, the lower end of liquidometer ontology is arranged in the blowdown flange, and the pressure sensor is vertically provided at the middle position of blowdown flange lower end.By above-mentioned, the present invention uses pressure sensor, the variation of static pressure caused by variation using liquid level measures liquid level, substantially increases the precision of detection, reduces deviation, the switching signal exported using upper and lower liquid-level switch, the analog signal of combination pressure sensor generates association interlocking, accurate to export liquid level warning signal, false alarm is prevented, the service life and safety of product are improved.
Description
Technical field
The present invention relates to the fields of the instrument and meter of industrial automation more particularly to a kind of with the reflexive feedback system of pressure
Magnetic double level gauge directly applies to water process, chemical industry, ship, petroleum, bio-pharmaceuticals, environmental protection, municipal administration, food, beverage machine
Etc. industries.
Background technique
Currently, magnetic double level gauge has entered computer age, enters so-called Automated library system Process Control System
The epoch of (Computer Integrated Process System, CIPS).CIPS utilizes computer technology, to entire enterprise
The operation of industry carries out integrated management and control, including the marketing, Production Scheduling, raw material selection, product distribution,
The overall processes such as cost management and the control of technical process, optimization and management.Dcs, Advanced process control plan
Summary and network technology, database technology etc. will realize the important foundation of CIPS.It is contemplated that process control will be in China
Developed faster during socialist modernization drive.
Magnetic double level gauge used at present is designed based on buoyancy and magnetic force principle.Floating ball with magnet is (referred to as
Floating ball) position in measured medium influenced by buoyancy: the variation of liquid level leads to the variation of magnetic float position.In floating ball
Magnet and conduit in sensor (magnetic reed switch) effect, make the quantity connected in conduit into the element (fixed value resistance) of circuit
It changes, and then the electrical quantities (current value) of appliance circuit system is made to change.Namely make the change of magnetic float position
Change the variation for causing current value size, to export the also corresponding current signal of liquid level or switching signal.It is real according to customer demand
The long-range control or alarm of existing automatic equipment.
Conduit portion is immersed in detected solution, and the temperature in conduit changes with the variation of fluid temperature.It is fixed in conduit
It is worth resistance, resistance value can generate variation in temperature change, to influence to export electric current, make the output also corresponding current signal of liquid level
Or switching signal inaccuracy, corresponding level value error are too big.
In the case where temperature change is little, actual liquid level deviation is little.But actually use very big (such as liquid of the process temperature difference
Temperature degree variation repeatedly from 0 degree to 90), the signal value of output cannot accurately be matched with actual liquid level, influence the control of equipment
Precision processed.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of magnetic double level gauges with the reflexive feedback system of pressure, adopt
Magnetic switch sensor is substituted with pressure sensor, the variation of static pressure caused by the variation using liquid level measures liquid
Position is acquired as remote signal, substantially increases the precision of detection, reduces deviation, the switch exported using upper and lower liquid-level switch
Signal, the analog signal of combination pressure sensor generate association interlocking, accurate to export liquid level warning signal, prevent false alarm,
More precisely stablize due to measuring, improves the service life and safety of product.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of reflexive with pressure
The magnetic double level gauge of feedback system, including liquidometer ontology, magnetic float, scale, cathode display, water inlet pipe, outlet pipe, upper liquid
The inside of liquidometer ontology is arranged in bit switch, lower liquid-level switch, blowdown flange and pressure sensor, the magnetic float,
The scale is arranged in the outer side edges of liquidometer ontology, and the cathode display is arranged in the side of scale, it is described into
Water pipe and outlet pipe are horizontally installed on a side of liquidometer ontology, the upper liquid-level switch and the setting of lower liquid-level switch respectively
On liquidometer ontology and it is located at the top of water inlet pipe and the lower part of outlet pipe, the blowdown flange is arranged in liquidometer
The lower end of ontology, the pressure sensor are vertically provided at the middle position of blowdown flange lower end.
In a preferred embodiment of the present invention, the liquidometer ontology uses hollow structure, the liquidometer sheet
It is placed with liquid in vivo.
In a preferred embodiment of the present invention, the magnetic float uses the column type floating ball with magnet.
In a preferred embodiment of the present invention, corresponding in the magnet driving cathode display in the magnetic float
Magnetic turns over pearl overturning 180 degree.
In a preferred embodiment of the present invention, be respectively arranged on the water inlet pipe and outlet pipe connecting flange and
Lower connecting flange.
In a preferred embodiment of the present invention, the magnetic double level gauge further includes terminal box, the terminal box
It is arranged on liquidometer ontology, terminal plate and upper liquid-level switch, lower liquid-level switch and pressure sensor in the terminal box
It is connected.
In a preferred embodiment of the present invention, the analog signal of the terminal box output alarm signal and 4-20mA.
The beneficial effects of the present invention are: a kind of magnetic double level gauge with the reflexive feedback system of pressure of the invention, uses
Pressure sensor substitutes magnetic switch sensor, and the variation of static pressure caused by the variation using liquid level measures liquid
Position is acquired as remote signal, substantially increases the precision of detection, reduces deviation, the switch exported using upper and lower liquid-level switch
Signal, the analog signal of combination pressure sensor generate association interlocking, accurate to export liquid level warning signal, prevent false alarm,
More precisely stablize due to measuring, improves the service life and safety of product.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the structural schematic diagram of a preferred embodiment of the magnetic double level gauge that the present invention has the reflexive feedback system of pressure；
Fig. 2 is the circuit diagram of Fig. 1；
The label in accompanying drawing is: 1, liquidometer ontology, 2, magnetic float, 3, scale, 4, cathode display, 5, water inlet pipe, 6, water outlet
Pipe, 7, upper liquid-level switch, 8, lower liquid-level switch, 9, blowdown flange, 10, pressure sensor, 11, terminal box, 12, upper connection method
Orchid, 13, lower connecting flange.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
As shown in Figure 1, the embodiment of the present invention includes:
A kind of magnetic double level gauge with the reflexive feedback system of pressure, including liquidometer ontology 1, magnetic float 2, scale 3, cathode are aobvious
Show device 4, water inlet pipe 5, outlet pipe 6, upper liquid-level switch 7, lower liquid-level switch 8, blowdown flange 9 and pressure sensor 10, it is described
Magnetic float 2 inside of liquidometer ontology 1 is set, the outer side edges of liquidometer ontology 1 are arranged in the scale 3, described
The side of scale 3 is arranged in cathode display 4, and the water inlet pipe 5 and outlet pipe 6 are horizontally installed on liquidometer ontology 1 respectively
A side, the upper liquid-level switch 7 and lower liquid-level switch 8 are arranged on liquidometer ontology 1 and are located at water inlet pipe 5
The lower end of liquidometer ontology 1, the pressure sensor 10 is arranged in the lower part on top and outlet pipe 6, the blowdown flange 9
It is vertically provided at the middle position of 9 lower end of blowdown flange.
Among the above, the liquidometer ontology 1 uses hollow structure, is placed with liquid in the liquidometer ontology 1.
In the present embodiment, connecting flange 12 and lower connecting flange are respectively arranged on the water inlet pipe 5 and outlet pipe 6
13。
Further, the magnetic double level gauge further includes terminal box 11, and the terminal box 11 is arranged in liquidometer
Terminal plate (figure does not regard) and upper liquid-level switch 7, lower liquid-level switch 8 and pressure sensor on ontology 1, in the terminal box 11
10 are connected.
Function declaration is carried out in conjunction with the circuit diagram of Fig. 2:
1. terminal box
Protect circuit board having built-in.The switching signal of electric signal, upper liquid-level switch and lower liquid-level switch that pressure sensor is exported,
It connects on control circuit board, is converted by line signal, the analog signal of alarm signal and 4-20mA is exported, for outer taking alarm
It is used with display.
Liquid-level switch and lower liquid-level switch on 2.
By with self-retaining function tongue tube and converter form, when magnetic float is with the lifting of liquid level, since magnetic coupling is made
With triggering magnetic reed switch on-off, to export a switching signal to the wiring board in terminal box.
3. connecting flange
Lower flange is docked with lower flange on container on liquidometer, is constituted linker, is made the liquid in the liquid level and magnetic turning plate in container
Position is contour, isobaric.
4. pressure sensor
With the variation of liquid level, also equivalent changes the current value of pressure sensor output, in this way, each liquid level has one
A corresponding current value acquires signal for control route.
5. magnetic float
Magnetic float uses the column type floating ball with magnet, is built in magnetic turning plate ontology, as the lifting of liquid level is also gone up and down, leads to
Cross magnetic coupling interaction, in magnet in float driving cathode display corresponding magnetic turn over pearl overturning 180 degree (bleached by red, or
It is red by leucismus), and with red continuous instruction liquid level.When magnetic float position is in upper and lower liquid-level switch, triggering magnetic red is opened
On-off is closed, so that it be made to export a switching signal.
6. scale
Indicate the height of liquid level, scale is usually white to turn over pearl boundary red.
7. cathode display
Cathode display turns over pearl by magnetism and forms, and when intrinsic floating ball rises or falls with liquid level, magnetic turns over pearl overturning,
It can show the height of liquid level.
A kind of magnetic double level gauge with the reflexive feedback system of pressure of the invention has following excellent compared with prior art
Point:
(1) application range is expanded, under 40 °C to+125 °C liquid levels, can be used；
(2) it due to substituting magnetic float liquidlevel meter using pressure sensor, is acquired as remote signal, substantially increases the essence of detection
It spends (being reduced to ± 1mm from ± 5mm), reduces deviation (being reduced to 0.3% from 6%)；
(3) using the switching signal of upper and lower liquid-level switch output, the analog signal of combination pressure sensor generates association interlocking,
Accurate output liquid level warning signal, prevents false alarm；
(4) more precisely stablize due to measuring, improve the service life and safety of product.
Due to resistance build-in attribute (temperature drift of resistance), magnetic switch sensor is substituted using pressure sensor, utilizes liquid
The variation of static pressure caused by the variation of position height measures liquid level；It is handled by ATMEGA8-AU processor analysis, output
Mutual corresponding current value is shown with cathode；Meanwhile the switching signal exported using upper liquid-level switch and lower liquid-level switch, in conjunction with
The analog signal of pressure sensor generates association interlocking, accurate to export liquid level warning signal, prevents false alarm.
In conclusion a kind of magnetic double level gauge with the reflexive feedback system of pressure of the invention, using pressure sensor
Magnetic switch sensor is substituted, the variation of static pressure caused by the variation using liquid level measures liquid level, as long-range
Signal acquisition substantially increases the precision of detection, reduces deviation, the switching signal exported using upper and lower liquid-level switch, in conjunction with pressure
The analog signal of force snesor generates association interlocking, accurate to export liquid level warning signal, false alarm is prevented, due to measuring more
Precisely stablize, improves the service life and safety of product.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of magnetic double level gauge with the reflexive feedback system of pressure, which is characterized in that including liquidometer ontology, magnetic float,
Scale, cathode display, water inlet pipe, outlet pipe, upper liquid-level switch, lower liquid-level switch, blowdown flange and pressure sensor, institute
The inside of liquidometer ontology is arranged in the magnetic float stated, and the outer side edges of liquidometer ontology, the yin is arranged in the scale
The side of scale is arranged in pole display, and the water inlet pipe and outlet pipe are horizontally installed on the side of liquidometer ontology respectively
Side, the upper liquid-level switch and lower liquid-level switch are arranged on liquidometer ontology and are located at top and the water outlet of water inlet pipe
The lower end of liquidometer ontology is arranged in the lower part of pipe, the blowdown flange, and the pressure sensor is vertically provided at blowdown
The middle position of flange lower end.
2. the magnetic double level gauge according to claim 1 with the reflexive feedback system of pressure, which is characterized in that the liquid
Position meter ontology uses hollow structure, is placed with liquid in the liquidometer ontology.
3. the magnetic double level gauge according to claim 1 with the reflexive feedback system of pressure, which is characterized in that the magnetic
Float uses the column type floating ball with magnet.
4. the magnetic double level gauge according to claim 3 with the reflexive feedback system of pressure, which is characterized in that the magnetic
Corresponding magnetic turns over pearl overturning 180 degree in magnet driving cathode display in float.
5. the magnetic double level gauge according to claim 1 with the reflexive feedback system of pressure, which is characterized in that it is described into
Connecting flange and lower connecting flange are respectively arranged on water pipe and outlet pipe.
6. the magnetic double level gauge according to claim 1 with the reflexive feedback system of pressure, which is characterized in that the magnetic
Flap level gauge further includes terminal box, and the terminal plate on liquidometer ontology, in the terminal box is arranged in the terminal box
It is connected with upper liquid-level switch, lower liquid-level switch and pressure sensor.
7. the magnetic double level gauge according to claim 6 with the reflexive feedback system of pressure, which is characterized in that described connects
The analog signal of wire box output alarm signal and 4-20mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394587.3A CN109405925A (en) | 2018-11-22 | 2018-11-22 | Magnetic double level gauge with the reflexive feedback system of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394587.3A CN109405925A (en) | 2018-11-22 | 2018-11-22 | Magnetic double level gauge with the reflexive feedback system of pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405925A true CN109405925A (en) | 2019-03-01 |
Family
ID=65474561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811394587.3A Pending CN109405925A (en) | 2018-11-22 | 2018-11-22 | Magnetic double level gauge with the reflexive feedback system of pressure |
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| CN (1) | CN109405925A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440670A (en) * | 2019-08-15 | 2019-11-12 | 中海石油深海开发有限公司 | A kind of production tree raising automated watch-keeping facility |
| CN117091674A (en) * | 2023-10-20 | 2023-11-21 | 磐石重工(青岛)股份有限公司 | Liquid level measuring device for pressure container |
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